mirror of
https://github.com/golang/go
synced 2024-09-24 23:20:12 -06:00
37 lines
723 B
Go
37 lines
723 B
Go
|
// $G $D/$F.go && $L $F.$A && ./$A.out
|
||
|
|
|
||
|
|
// Copyright 2009 The Go Authors. All rights reserved.
|
||
|
|
// Use of this source code is governed by a BSD-style
|
||
|
|
// license that can be found in the LICENSE file.
|
||
|
|
|
||
|
|
package main
|
||
|
|
|
||
|
|
type T1 struct { x, y int; }
|
||
|
|
type T2 struct { z, w byte; }
|
||
|
|
type T3 T1
|
||
|
|
|
||
|
|
type MyInt int
|
||
|
|
func (MyInt) m(*T1) { }
|
||
|
|
|
||
|
|
func main() {
|
||
|
|
{
|
||
|
|
var i interface{} = new(T1);
|
||
|
|
v1, ok1 := i.(*T1);
|
||
|
|
v2, ok2 := i.(*T2);
|
||
|
|
v3, ok3 := i.(*T3);
|
||
|
|
if !ok1 || ok2 || ok3 {
|
||
|
|
panicln("*T1", ok1, ok2, ok3);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
{
|
||
|
|
var i interface{} = MyInt(0);
|
||
|
|
v1, ok1 := i.(interface{ m(*T1) });
|
||
|
|
v2, ok2 := i.(interface{ m(*T2) });
|
||
|
|
v3, ok3 := i.(interface{ m(*T3) });
|
||
|
|
if !ok1 || ok2 || ok3 {
|
||
|
|
panicln("T", ok1, ok2, ok3);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|